I just received a few pics of the MG Wasp project from Jeroen Booy. Here they are:
engine is a 1100cc A-series engine.
Car would have had a 85" wheelbase and 43.6" height. 85" wheelbase is 2cm more than the Gold wheelbase and the height of the Wasp would have been much lower. It's almost a GTM coupe, but it makes you think why Harold never went through with a mid engined Gold. It would have fitted straight in and he had the back up and experience from Gordon Murray.